Elevator



2 Sheets-Sheet '2.

(No Model.)

G. B. BERGEN.

ELEVATOR.

Pqtented Mar. 29, 1887.

Illlllllllllm- I Tim WZ/flsss as UNITED STATES PATENT OFFICE.

GEORGE B. BERGEN, OF MIIAVAUKEE, \VISCONSIN.

ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 360,270, dated March29, 1887.

Applioatioufiled Xovemberfi,1886. Serial No. 218,133. (No model.)

To (LZZ whom, it may concern:

Be it known that I, GEORGE B. BERGEN, of Milwaukee, in the county ofMilwaukee, and in the State of \Visconsin, have invented certain new anduseful Improvements in Elevators; and I do hereby declare that thefollowing is a full, clear, and exact description thereof.

My invention relates to elevators; and it consists in certainpeculiarities of construction, to be hereinafter described withreference to the accompanying drawings and subsequently claimed.

In the drawings, Figure 1 represents a vertieal transverse sectionalview of an elevator constructed according to my invention; Fig. 2, asimilar View at right angles to Fig. 1; Fig. 3, a horizontal section onthe irregular line w as, Fig. 1; Figs. 4 and 5, detail views of theindicator mechanism.

Referring by letter to the drawings, A represents an elevator-caboperative in suitable guides, 13, said cab having a false bottom, 0,that is provided with tracks a for the wheels I) of movable weightsD,the latter being either solid metal or boxes containing sand, shot, orother heavy substances. Fulcrumed to the under side of the true bottom 0of the cab A are a series of bell-cranks, 0, each having one arm thereofpivotally connected to a pedal, d, that extends up into said cab, whilethe other arm impinges against a corresponding catchframe, 0, fulcrumedatfto the false bottom 0, a stop, 9, serving to limit the movement ofthis catch-frame.

The chamber G", formed by the true and false bottoms of the cab A, comesin and out of register with chambers E, arranged at different elevationsin a wall, F, of the elevatorshaft. The floors of the chambers E arealso provided with tracks a for the weights D, and catch-frames e arefulerumed at f to these floors, to impinge againstlevers G, fulcrumed ath and operated by cords 2', extended through the wall F to come withinreach of the operator in the cab, the movement of said catchframes 6being limited by stops 9.

Fast to the under side of the false bottom 0 of the cab A is one end ofa cable, H, that carries a counterpoise, I, and extends up over apulley, K, that is intended to be journaled in suitable bearings at thetop of the elevatorshaft, the cable being then carried down and madefast to the top of said cab.

At the bottom of the elevator-shaft are two pulleys, j j, on whichoperate a cable, L, usually of less diameter than the main one, H, andfrom these pulleys the cable L extends up through the cab A, a turnbeing taken around a pulley, M, that has extended journals k k,operativein bearings mm, depending from the roof of said cab. From thepulley M the cable L is carried up and on over the main pulley K,friction-pulleys am being suitably arranged to act as guides for saidcable. The ends of the cable L are oppositely passed around a pulley, 0,that isjournaled to brackets 1) upon a side wall of the cab, and saidends of this cable are finally secured to a spring-bolt, N, thatautomatically engages recesses 1, arranged at suitable intervals in awall of the elevator shaft, and thus lock the cab in position at theelevation it may attain corresponding with each of said recesses.

The spring-bolt N engages'the forked augular end 8 of a lever, O,fnlcrumed att to the outside of the cab A, the other end of this leverbeing connected by a cord, u, with the spindle o of an indieator'finger,o, for a dial, 1?, fast on the inside of said cab, a volute spring, to,serving to cause a return of the finger to its normal position afterbeing actuated,in the manner to be hereinafter described.

The journals k k are provided with drums y y, on which are wound cords z2, that suspend folding seats R R, operative in suitable guides, q; andsuitably secured to the inner sides of the cab are steps S S,- thatassist the operator to get upon said seats.

In describing the operation of my invention we will suppose theelevator-cab A to be down, as shown by Figs. 1 and 2, and the severalpart-s in equipoise.

When the operatorsteps into the cab, the latter will be thrown out ofbalance and cause a depression of the lever 0, whereby the finger 1)will be actuated to indicate on the dial P the approximate weight ofsaid operator. By actuating one or more of the pedals d, thecorresponding catch frame or frames will be actuated to discharge fromthe false bottom 0 of the cab into an adjacent chamber, E, a Weight orweights, D, approximately to the heft of the operator, thereby bringingthe cab and occupant into balance, or nearly so, with the .counterpoiseI and ready for the ascension.

The operator now gets upon the seatR, and

his weight causes the cable L to tighten and thereby draw thespring-bolt N, said seat running down in its guides q, thereby revolvingthe journals 70 7c and pulley M, the latter by its cable-connection inturn actuating the pulley K in such a direction as to make thecounterpoise on the cable H descend and, in consequence of suchoperation, elevate the cab.

In case the counterpoisedoes not serve to cause a full ascension of thecab, or greater speed is desirable, the operator may aid the ascent bypulling on the cable L; or, if desired, a greater number of the weightsmay be thrown off prior to the start.

As the seat It descends, the empty one, B, is carried up, and thusbrought into position for another operation, the fall of said seatsbeing proportioned tothe height of the elevator-shaft, or, in otherwords, to the length of the main cable K, and their suspensioncords z zwound in opposite directions. WVhen thecab is at the desired height, theoperator gets off the seat, and the cable L is thus given sufficientslack to permit the spring-bolt to engage with the recess r, with whichit now comes into register. To make the descent, the operator gets uponthe seat R, and spring-bolt N is drawn'out, as above described, whenbyhis weight said seat is caused to descend and the pulleyK to revolve ina reverse direction to that described for the ascension.

In order to hasten the descent, a lever, G, maybe actuated to release acatch-frame, e, and thereby add a weight, D, to the cab; or the cable Lmay be pulled upon to accomplish or facilitate the accomplishment of thesame result.

In case more than one person be carried in the cab or the latter befilled with people and baggage, the heft will be indicated on the dial1? by the finger v, and the operator can c'orrcspondingly manipulate theweights D, in the manner above described, according to the load.

The seats R R are made folding, in order that the operator may readilyget at the levercords i in case the latter been that side of theelevator-shaft.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. An elevator cab, in combination with weights mounted on wheels andmeans, substantially as described, for transferring said pivoted catchesarranged to engage the weights,

and suitable levers for disengaging said catches, substantially as andfor the purpose set forth.

5. An elevator-cab provided with tracks, in combination with chambersleading from the elevator-shaft and provided with tracks arranged tocome in register with those on the cab, weights mounted on wheels, andmeans, substantially as described, for transferring the weights to andfrom said cab and chambers, for the purpose set forth.

6. An elevator-cab provided with a pulley having extended journals, andvertical sliding seats operatively connected to said journals andarranged to move in opposite directions, in combination with acounterpoise-cable operatively arranged on both pulleys, andtransferable weights, substantially as and for the purpose set forth. v

7. An elevator-cab provided with a pulley having extended journals, andvertical sliding seats operativelyconnected to said journals andarranged to move in opposite directions, in combination with acounterpoise-cable operative on a main pulley, an auxiliary cableoperatively arranged on both pulleys, aspringbolt secured to the ends ofthis latter cable and connected with an indicator mechanism, in turnconnected with the bolt, and transferable weights, substantially as andfor the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand, atMilwaukee, in the county of Milwaukee and State of \Viscousin, in thepresence of two witnesses.

GEORGE B. BERGEN.

lVitnesses:

N. E. ()LIPHANT, H. G. UNDERWOOD.

